TUCSON, Ariz. - U.S. Customs and Border Protection, Office of Field Operations officers at the Port of Nogales arrested four U.S. citizens in failed drug smuggling attempts of heroin and fentanyl over the last several days.

TUCSON, Ariz. – U.S. Customs and Border Protection, Office of Field Operations officers arrested a Yuma resident for attempting to smuggle more than 61 pounds of fentanyl through the Port of San Luis September 7.